What is the prognosis of guttate psoriasis?

Updated: Oct 03, 2019
  • Author: Kirstin Altman, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Answer

Guttate psoriasis is a nonfatal eruption that either can run a limited course over several weeks to a few months, may recur, or can develop into the chronic plaque-type of psoriasis. Scarring is not a problem. Previously affected areas may show postinflammatory hypopigmentation or postinflammatory hyperpigmentation.

Data available on the prognosis of guttate psoriasis are sparse. Although guttate psoriasis often has a short-lived course, it may also represent the initial stage of chronic plaque-type psoriasis. Progression rates to chronic plaque psoriasis, reported in small studies, have ranged from one third to approximately two thirds (68%) of patients with gutatte psoriasis. [62, 63]

In a study of 15 patients, the probability of an individual developing chronic psoriasis within 10 years of a single episode of acute guttate psoriasis was suggested to be about 1 in 3, although further studies with larger numbers of patients are needed to more accurately determine the risk. [62]

Like other forms of psoriasis, guttate psoriasis tends to improve during the summer and worsen during the winter. Once an episode of acute guttate psoriasis has cleared, many patients will have limited or no evidence of psoriasis for prolonged periods.


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